Ray piv txwv yog dab tsi?
Ray piv txwv yog dab tsi?

Video: Ray piv txwv yog dab tsi?

Video: Ray piv txwv yog dab tsi?
Video: Xwm Kab Yog Dab Tsi?: Hmoob Nkag Siab Yuam Kev Tag Lawm 2024, Kaum ib hlis
Anonim

Hauv geometry, a ray yog ib txoj kab nrog ib qho kawg (los yog taw tes ntawm lub hauv paus chiv keeb) uas txuas mus rau infinitely nyob rau hauv ib qho kev taw qhia. Ib piv txwv ntawm a ray yog lub hnub ray hauv qhov chaw; lub hnub yog qhov kawg, thiab ray ntawm lub teeb txuas ntxiv mus indefinitely.

Cia li xav txog qhov no, hu ua Ray?

Ray . Txhais: Ib feem ntawm ib kab uas pib ntawm ib qho taw tes thiab tawm mus rau hauv ib qho kev taw qhia rau infinity. A ray pib ntawm ib qho taw tes thiab tawm mus rau hauv ib qho kev taw qhia mus ib txhis, mus rau infinity. Qhov chaw nyob qhov twg ray pib yog hu ua (tsis meej pem) qhov kawg.

Kuj Paub, dab tsi yog lub ntsiab lus ntawm lub teeb nyob rau hauv geometry? Ray (Kev sib koom tes Geometry ) Txhais : Ib kab uas pib ntawm ib qho taw tes nrog cov kev sib koom ua ke, thiab tawm mus rau hauv ib qho kev taw qhia tshwj xeeb mus rau infinity, tejzaum nws mus txog qhov thib ob. Sim no Kho lub ray hauv qab no los ntawm dragging ib tug txiv kab ntxwv dot thiab saib yuav ua li cas lub ray AB behaves.

Ib sab saum toj no, dab tsi yog qhov piv txwv ntawm kab ntu?

Piv txwv ntawm kab ntu suav nrog ob sab ntawm daim duab peb sab lossis square. Feem ntau, thaum ob qho tib si ntus Qhov kawg cov ntsiab lus yog vertices ntawm ib tug polygon los yog polyhedron, lub kab ntu yog ib qho ntug (ntawm polygon lossis polyhedron) yog tias lawv nyob ib sab vertices, lossis lwm yam kab pheeb ces kaum.

Dab tsi yog qhov hluav taws xob hauv science?

Txhais. Ib lub teeb ray yog ib txoj kab (ncaj los yog nkhaus) uas yog perpendicular rau lub teeb lub wavefronts; nws tangent yog collinear nrog yoj vector. Teeb rays nyob rau hauv homogeneous media yog ncaj. Lawv khoov ntawm qhov sib cuam tshuam ntawm ob qhov kev tshaj tawm tsis sib xws thiab tej zaum yuav nkhaus hauv qhov nruab nrab uas qhov kev hloov pauv hloov pauv.

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